How to Avoid Sending Winmail.dat Attachments
Setting Global Properties
Set the Global Properties to have Outlook by default send your email in Hypertext Markup Language (HTML):
- Outlook 2007: Select Tools > Options > Email Format > Internet Options. Select Convert to HTML format.
- Outlook 2010 and 2013: Select File > Options > Mail and then scroll to the bottom of the dialog. Select Convert to HTML format.
Meeting requests or voting buttons may not work with this setting, but you can override the format on select messages.
